I introduced a grou pof lemons tonight to my bloodfins and sometimes they school individually (bloodfins and lemons) and sometimes they all school together.
I have a school of glow light and head tail light, they dont school at all with each other. The five glowlights gather around headlights but really dont swim with them.
Hi, I have 6 neons (used to be 8) and 4 rummies, and they really don't school together. The rummies school really well, for the most part, but the neons only school loosely with each other. They seem to like to do their own thing...
I really believe that you only begin to see good schooling behavior when you have 10 or more individuals of the same species.
I have 16 neons and they school together, but not all the time. When they do get together though it looks amazing. I'd like to someday set up a HUGE community planted tank that has schools of 50 or more and then you would really begin to see some good schooling behavior.
You will probably be more pleased with a school of 18 of a single species than you would with 6 each of 3 different species.
I had a blackskirt that schooled with my pristellas until I got some more blackskirts, but since getting the new ones, the blackskirt sticks with them.